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Saturated isobutane vapor at 320 K is contained in a piston-cylinder assembly. It is expanded to 3 bar by a reversible isothermal process. At 320 K, the vapor pressure of isobutane is 6.243 bar. Using the truncated virial equation of state, i.e. with the second virial coefficient,
a) Estimate the molar volume of isobutane at the initial and final states. (b) Determine the work done during the expansion process. (b) Determine the work done during the expansion process.
Air exerts a pressure of 900KPa within a 0.45 cubic meter container of fixed volume. It is cooled such that the pressure falls to 3.25bar. The temperature of the air is then measured and was found to be 285C. Determine the mass of the air, the initia..
determine (a) the instantaneous center of rotation of the double pulley (b) the velocity of th slider block (c) the number of inches of cord wrapped or unwrapped on each pulley per second.
Why does a car engine stop when we turn the key even when the vehicle is running? The engine should run on alternator in case of a petrol engine and on it's own in case of a diesel engine. Then how does it stop exactly?
A specimen of aluminium having a rectangular cross section 9.9 mm × 13.0 mm (0.3898 in. × 0.5118 in.) is pulled in tension with 35300 N (7936 lbf) force, producing only elastic deformation. The elastic modulus for aluminium is 69 GPa (or 10 × 10 6..
a hypothetical a-b alloy of composition 59 wt b-41 wt a at some temperature is found to consist of mass fractions of
A process with Gp= 2/(2s+1) and Gd=1/(2s+1) experiences a disturbance step change of magnitude 5. The SP remains constant. If a P-controller alone with Kc=1 is used and Ga=Gs=1, then what is the output variable, delta Y(t) versus time?
a piston-and-cylinder device contains 10 kmol of n-pentane at -35.5 c and 100 bar. slowly the piston is moved until the
Consider two actual power plants operating with solar energy. Energy is supplied to one plant from a solar pond at 80°C and to the other from concentrating collectors that raise the water temperature to 600°C. Which of these power plants will have a ..
Show that Airy's stress function ? = Crθ sinθ satisfies the biharmonic equation. Also determine the stresses in polar co-ordinate system.
a weightless box with a 0.4m by 0.4m square base is floating horizontally on the water surface. it contains a 0.2m
hot water traveling through a thick-walled steel pipe k60 wmmiddotk is cooled externally by a cross-flow airstream at a
Design a hollow steel shaft to transmit 225 kw of power at 80 rpm without exceeding a shearing stress of 60 MPa. Consider only torsion and assume that there are no stress concentrations. Make the ratio of the outside diameter to the inside diameter t..
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